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3D Printing and Molding Study in Polymeric Materials, 2nd Edition

A special issue of Polymers (ISSN 2073-4360). This special issue belongs to the section "Polymer Processing and Engineering".

Deadline for manuscript submissions: 15 February 2026 | Viewed by 1372

Special Issue Editor


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Guest Editor
Faculty of Applied Informatics, Tomas Bata University in Zlin, Nad Stranemi 4511, 760 05 Zlin, Czech Republic
Interests: rapid prototyping; 3D digitalization; mechanical testing; injection molding of plastic parts; temperature stability of polymers
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Special Issue Information

Dear Colleagues,

The “3D Printing and Molding Study in Polymeric Materials, 2nd Edition” Special Issue aims to cover a wide range of topics related to the utilization of 3D printing and molding techniques in polymeric materials. It intends to explore innovative approaches, applications, and advancements in the field of polymeric material manufacturing through 3D printing and molding processes. The submissions expected for this Special Issue include research articles, reviews, and studies focusing on the following aspects:

  • Novel 3D printing processes and molding techniques for polymer applications.
  • Comparative studies between traditional molding techniques and 3D printing methods.
  • Studies on the properties of 3D-printed and molded polymers. New techniques for measuring the static and dynamic behavior of 3D-printed structures and molded components.
  • Applications of 3D-printed molds in various industries.
  • Health and environmental considerations related to the 3D printing of polymeric materials.

By encompassing these diverse topics, this Special Issue aims to provide a comprehensive overview of the current trends, challenges, and advancements in the field of 3D printing and molding of polymeric materials.

Dr. Aleš Mizera
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 250 words) can be sent to the Editorial Office for assessment.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Polymers is an international peer-reviewed open access semimonthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2700 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • 3D printing
  • molding techniques
  • polymeric materials
  • material manufacturing

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Published Papers (2 papers)

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Research

19 pages, 6176 KB  
Article
Prediction of Mechanical Properties of Injection-Molded Weld Lines of Glass Fiber-Reinforced Composites
by Zuguo Bao, Yunxiang Yan, You Zhang, Ruihan Dong, Weijian Han and Qing Liu
Polymers 2025, 17(23), 3120; https://doi.org/10.3390/polym17233120 - 24 Nov 2025
Viewed by 453
Abstract
The weld line has a great impact on the mechanical properties of injection-molded parts, especially large ones. Currently, there is still a lack of useful simulation tools to accurately predict the mechanical properties of weld lines. To solve this issue, this paper studies [...] Read more.
The weld line has a great impact on the mechanical properties of injection-molded parts, especially large ones. Currently, there is still a lack of useful simulation tools to accurately predict the mechanical properties of weld lines. To solve this issue, this paper studies the mechanical properties of weld lines in injection-molded glass fiber (GF)-reinforced composites and builds a mathematical model to predict these properties. This model combines polymer chain dynamics with fiber–matrix interfacial debonding mechanics, enabling multiscale characterization of weld line strength. The experimental results showed that injection temperature, injection pressure, and fiber content all affect the mechanical properties of weld lines, with fiber content exerting the most significant influence. To predict weld line strength, a mathematical model was established by integrating multiple simulation software and tools: Moldex3D for mold flow analysis, Digimat for material modeling, and Abaqus for multiscale mechanical analysis. Comparisons between the simulation and experimental results demonstrated high accuracy of the model (errors less than 10% for tensile strength and 3.5% for stiffness, respectively), which provides an effective tool for predicting the weld line performance of glass fiber-reinforced polypropylene composites. Full article
(This article belongs to the Special Issue 3D Printing and Molding Study in Polymeric Materials, 2nd Edition)
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16 pages, 20415 KB  
Article
Flow-Line-Reducing Tetrahedral Metal Effect Pigments for Injection Molding: A Yield-Rate-Improved Particle Manufacturing Method Based on Soft UVImprint Lithography
by Nils Maximilian Demski, Holger Seidlitz, Felix Kuke, Oliver Niklas Dorn, Janina Zoglauer, Tobias Hückstaedt, Paul Hans Kamm, Francisco García-Moreno, Noah Kremp, Christian Dreyer and Dirk Oberschmidt
Polymers 2025, 17(19), 2708; https://doi.org/10.3390/polym17192708 - 8 Oct 2025
Viewed by 763
Abstract
This publication presents an improved manufacturing method for tetrahedral metal effect pigment particles that demonstrates reduced flowlines in injection-molded polymer components compared with conventional platelet-shaped pigment particles. The previously published cold forming process for tetrahedral particles, made entirely from aluminum, faced manufacturing challenges, [...] Read more.
This publication presents an improved manufacturing method for tetrahedral metal effect pigment particles that demonstrates reduced flowlines in injection-molded polymer components compared with conventional platelet-shaped pigment particles. The previously published cold forming process for tetrahedral particles, made entirely from aluminum, faced manufacturing challenges, resulting in a high reject rate due to particle adhesion to the micro-structured mold roller. In contrast, this study introduces a new manufacturing method for tetrahedral particles, now consisting of metallized UV-cured thermoset polymer. These particles, dispersed in amorphous matrix thermoplastics, have shown to maintain their shape during the injection molding process. The manufacturing technique for these novel particles is based on UV imprint lithography, omitting the reject rates compared with the previously presented cold rolling process of tetrahedral full aluminum particles. Thus, the novel manufacturing technique for tetrahedral pigment particles shows increased potential for automation through roll-to-roll manufacturing in the future. Full article
(This article belongs to the Special Issue 3D Printing and Molding Study in Polymeric Materials, 2nd Edition)
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